On Wed, 2009-07-15 at 16:13 -0700, Jon Smirl wrote:On Wed, Jul 15, 2009 at 7:10 PM, Alan Cox<alan@xxxxxxxxxxxxxxxxxxx> wrote:Random link from google, slide 21interrogating a data structure stored in option-rom memory. My initialIt isn't safe. If you hit certain ISA devices your system will drop dead.
implementation involved blindly scanning from c0000 to f0000 in 512 byte
increments. Neil and others pointed out that this may not be a safe
OTOH I doubt anyone has an intel matrix raid controller and a WD80x3 on
the same box ;)
http://download.microsoft.com/download/9/8/f/98f3fe47-dfc3-4e74-92a3-088782200fe7/TWAR05005_WinHEC05.ppt
PCI 3.0+ allows 512b alignment, but you must first make sure you are
on a PCI 3.0+ system.
Thanks, I believe this may be the missing difference between my test
system and Hans'.